[Bug tree-optimization/101573] uninitialized warning could not appear correclty in -O0 optimisation level

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101573

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 51195
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51195&action=edit
patch

patch in testing